[broken schema] fix the group_mapping function in case where some standard group isn't found: we currently loop for ever, boring the user by asking ever and ever the same question...

from os.path import join
from cubicweb.toolsutils import create_dir

option_renamed('pyro-application-id', 'pyro-instance-id')

create_dir(join(config.appdatahome, 'backup'))